* {
    margin: 0;
    padding: 0;
    text-decoration: none;
}
li {
    list-style: none;
}
.w {
    width: 1200px;
    margin: 0 auto;

}
body {
    background-color: #f3f5f7;
}
a {
    text-decoration: none;
}
.clearfix::before,.clearfix:after {
    content: "";
    display: table;
  }
  .clearfix:after {
      clear: both;
  }
  .clearfix {
      *zoom:1;
  }
.header {
    height: 42px;
    margin: 30px auto;
}
.logo {
    float: left;
    width: 198px;
    height: 42px;
}
.nav {
    float: left;
    margin-left: 60px;
}
.nav li {
    float: left;

}
.nav a {
    display: block;
    margin: 0 15px;
    line-height: 42px;
    padding: 0 10px;
    height: 42px;
    text-decoration: none;
    font-size: 18px;
    color: #050505;
}
.nav a:hover {
    border-bottom: 2px solid skyblue;
    color: skyblue;
}
/* search模块 */
.search {
    float: left;
    margin-left: 50px;
    width: 412px;
    height: 42px;
}
.search input {
    float: left;
    width: 345px;
    height: 38px;
    padding-left:15px;
    border: 2px solid skyblue;
    border-right: 0;
    color: #bfbfbf;
    font-size: 14px;
}
.search button {
    float: left;
    width: 50px;
    height: 42px;
    border: 0;
    background:url(images/btn.png)
}
.touxiang {
    float: right;
    line-height: 42px;
    margin-right: 30px;
    font-size: 14px;
    color: #666666;
}
.banner {
    height: 420px;
    background-color: #1c036c;
}
.banner .w {
    height: 420px;
    background: url(images/banner2_20190819_210028.png) no-repeat top center
}
.subnav {
    float: left;
    padding-top: 8px;
    width: 190px;
    height: 412px;
    background-color: rgba(0, 0, 0, 0.3);
}

.subnav li {
    height: 45px;
    line-height: 45px;
    padding: 0 20px;
}
.subnav a {
    text-decoration: none;
    color: #fff;
    font-size: 14px;
}
.subnav span {
    float: right;
}
.subnav a:hover {
    color: skyblue;
}
.course {
    float: right;
    width: 230px;
    height: 300px;
    background-color: #fff;
    margin-top: 50px;
}
.course h2 {
    text-align: center;
    height: 48px;
    line-height: 48px;
    background-color: #9bceea;
    font-size: 18px;
    color: #fff;
}
.bd {
    padding: 0 20px;
}
.bd li {
    padding: 14px 0;
    border-bottom: 1px solid #ccc;
}
.bd h4 {
    font-size: 16px;
    color: #4e4e4e;
}
.bd p {
    font-size: 12px;
    color: #a5a5a5;
}
.more {
    text-decoration: none;
    display: block;
    margin-top: 3px;
    height: 38px;
    border: 1px solid #00a4ff;
    text-align: center;
    line-height: 38px;
    color: #00a4ff;
    font-size: 16px;
    font-weight: 700;
}
.goods {
    height: 60px;
    line-height: 60px;
    margin-top: 10px;
    background-color: #fff;
    box-shadow: 0 2px 3px 3px rgba(0, 0, 0, 0.1);
}
.goods h3 {
    float: left;
    margin-left: 30px;
    font-style: 16px;
    color: skyblue;
}
.goods ul {
    float: left;
    margin-left: 30px;
}   
.goods ul li {
    float: left;


}
.goods ul li a {
    padding: 0 30px;
    border-left: 1px solid #ccc;
    color: #050505;
}
.goods .mod {
    float: right;
    margin-right: 30px;
    font-style: 14px;
    color: skyblue;
}
.box {
    margin-top: 30px;
}
.box-hd {
    height: 45px;
}
.box-hd h3 {
    float: left;
    font-style: 20px;
    color:#494949;
}
.box-hd a {
    float: right;
    margin-top: 10px;
    margin-right: 30px;
    font-size: 12px;
    color: #a5a5a5;
}
.box-bd ul {
    width: 1225px;
}
.box-bd ul li {
    float: left;
    width: 228px;
    height: 270px;
    background-color: #fff;
    margin-right: 15px;
    margin-bottom: 15px;
}
.box-bd ul li img {
    width: 100%;
}
.box-bd ul li h4 {
    margin: 20px 20px 20px 25px;
    font-size: 14px;
    color: #050505;
}
.box-bd .info {
    margin: 0px 20px 0px 25px;
    font-size: 12px;
    color: #999999;
}
.box-bd .info span {
    color: #ff7c2d;
}
.footer {
    height: 315px;
    background-color: #fff;
}
.footer .w {
    padding-top: 35px;
}
.copyright {
    float: left;
}
.links {
    float: right;
}
.copyright p {
    font-size: 12px;
    color: #666;
    margin: 20px 0 15px 0;
}
.app {
    display: block;
    width: 118px;
    height: 33px;
    border: 1px solid skyblue;
    text-align: center;
    line-height: 33px;
    font-size: 16px;
    color: skyblue;
}
.links dl {
    float: right;
    margin-left: 100px;
}
.links dl dt {
    font-size: 16px;
    color: #333333;
    margin-bottom: 5px;
}
.links dl dd a{
    font-size: 12px;
    color: #333;
}
.copy {
    display: block;
    text-align: center;
    height: 200px;
}